Find the ISS, follow rocket launches, explore the Moon and Mars, and learn how orbits and TLE data work. Practical guides, all free, written around the live tracker you can open in your browser.
SatFleet Live is a free space tracker that runs in your browser. It follows more than 30,000 satellites in real time, and goes beyond Earth orbit to rocket launches, the Moon, Mars and deep space. No account and no download. See every feature.
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A complete beginner's guide to real-time satellite tracking. Learn how to use a free satellite tracker online, follow the ISS, Starlink, GPS satellites and thousands more directly from your browser, no sign-up required.
Everything SatFleet Live can do: 30,000+ satellites on a 2D map and 3D globe, rocket launches with embedded streams, Next Passes, AR Sky View and visibility filters. Free, no account needed.
The best free satellite tracking websites compared, what makes SatFleet Live stand out, and how to track satellites online with no registration.
Explore 30,000+ satellites on an interactive 3D globe, free in your browser. How the 3D mode works and what makes it different from a flat map.
What real scale view is, how to switch it on and why seeing orbits and bodies at true proportions changes how you read the map.
Move forward and backward in time to see where satellites were and where they will be.
The ISS is the third-brightest object in the night sky. What it looks like, why it is only visible at dusk and dawn, and how to get the exact pass time and direction for your location tonight.
Point your phone at the sky and see which satellites are overhead. How AR Sky View works and how to line it up with a real pass.
Predict when satellites pass overhead with SatFleet Live. Step-by-step ISS sighting plans, Starlink trains, how to read pass data and tips for naked-eye observation.
The best window is the 90 minutes after sunset or before sunrise. Timing, seasonal variations and how to find exact pass times for your location.
What a Starlink train looks like, when the visibility window opens after a launch, how to find a train in Next Passes and the tips that separate seeing it from missing it.
A live count of every active Starlink satellite, updated every two hours. Launches, orbital shells, altitude, speed and how many more SpaceX plans to add.
China's crewed station has orbited since 2022 and reaches magnitude −3, brighter than Jupiter. Modules, orbit, crew rotations and how to spot it tonight.
Why some satellites outshine the stars, what causes flares, why they vanish mid-pass and how to predict brightness with a visual magnitude scale.
See where the International Space Station is right now on a live 3D map, how fast it travels, how high it flies and how to spot it from your location.
Saw a line of lights in the sky? Tell a Starlink train from the ISS, a satellite flare, a rocket, a plane or a meteor by shape, speed, brightness and duration.
How many people are in space right now and who they are: the current crews on board the ISS and Tiangong, plus any short missions in orbit.
Falcon 9 flies every few days and Starship is rewriting the rules. SatFleet Live shows every upcoming SpaceX mission with a LIVE badge. The 2026 schedule, Falcon 9 stats and how to watch.
121 metres tall, 33 Raptor engines, fully reusable. Flight history from IFT-1 to today, Super Heavy specs, the Mechazilla booster catch and how to watch the next test live.
Where and how to watch upcoming rocket launches live, and how to follow them on the SatFleet Live map.
Why rockets fly the paths they do: launch azimuth, the gravity turn and how a trajectory decides which orbit a payload reaches.
Follow NASA's Artemis 2 crewed mission around the Moon and see where it is on the map.
What phase the Moon is in tonight, how it changes through the month and how to see it on the SatFleet Live Moon map.
The distance to Mars changes constantly. Why it varies, how it is measured and how to see the current distance live.
Two NASA rovers compared: where they landed, what they study and how to follow both on the Mars map.
How spacecraft far beyond Earth orbit are tracked, and how SatFleet Live shows their positions.
The current position of humanity's most distant spacecraft, how far it is from Earth and how it is tracked.
JWST does not orbit Earth. Where it actually sits, why it is that far away and how to follow its position.
Track the Falcon Heavy Tesla Roadster in solar orbit: its current position, distance and where it is heading.
Why Pluto was reclassified as a dwarf planet in 2006 and where it sits in the solar system today.
The three main orbit types, LEO, MEO and GEO, and how altitude changes speed, coverage, latency and tracking. Real examples with the ISS, Starlink, GPS and weather satellites.
The Two-Line Element format behind every satellite tracker. Read each field, decode a real ISS TLE and see how SGP4 turns two lines of text into a live position.
A live count of every active satellite around Earth, updated every two hours. How many are Starlink, which orbits they use, when they launched and which countries own them.
Over 32,000 tracked fragments share orbit with active satellites, plus 500,000+ too small to track. Where debris comes from, why Kessler syndrome is real and which missions aim to fix it.
Track upcoming satellite, rocket body and debris re-entries live. Predicted times, uncertainty windows and possible fall zones from official Space-Track data, updated every 6 hours.
Why nobody knows exactly where a falling satellite will land until the final hours. Re-entry windows, ground tracks and debris footprints, explained simply.
Only one person is known to have been touched by falling space junk. The real odds of being hit by space debris, what survives re-entry and what to do if you find a piece.
How one collision in orbit can trigger a chain reaction of space debris, whether Kessler syndrome is already happening, and what the movie Gravity got wrong.
The anti-satellite tests and the collision behind most space junk in low orbit. What happened in each, where the debris is now, and how to see each cloud live.
Spent rocket stages are the heaviest space debris and the most likely to survive re-entry. What rocket bodies are, why they matter and how to track them live.
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